By using a slinky,both longitudinal and transverse waves can be produced.
Hold one end of the Slinky still on the floor. While holding the slinky on the floor, move the other end of the Slinky, in a single motion, back and
forth very quickly perpendicular to its stretched
length. A transverse wave will be made.
Hold one end of the Slinky still. Pull the other end of the stretched metal Slinky and
then let go of the coils. A longitudinal wave will be made and will travel back and forth
over the length of the Slinky.